Electronic device, method, and non-transitory computer readable storage medium for identifying set of information according to change in size of display area of flexible display

An electronic device comprising:

• a housing;
• a flexible display capable of being slid into the housing and being slid out of the housing;
• a memory configured to store instructions;
• and
• a processor, operably coupled with the flexible display, the processor is configured to, when the instructions are executed:
• display a user interface including sets of information in a display area of the flexible display exposed out of the housing;
• receive a user input for changing size of the display area from first size to second size smaller than the first size, while displaying the user interface including the sets of the information;
• identify a set of first information among the sets of information, based on at least one of context information of the electronic device or context information of a user of the electronic device, in response to the user input;
• and
• after the display area is changed from the first size to the second size in response to the user input:
• cease to display remaining sets except the set of the first information among the sets of the information to cause the remaining sets to disappear from the user interface;
• and
• further display, in the user interface, a set of second information associated with the set of the first information alongside the set of the first information that is maintained in the user interface after the user input is received.